Lubricating system



1943. J. G OU LDBOURN EI'AL 2,331,119

LUBRICATING SYSTEM Original Filed May 20, 1938 Inventors Patented Oct. 5, 1943 2 ,331,119 5 r I i 2331,11 I g; nnnnrcarmo srsrmr Joseph Goultlbounr and Thomas Aubrey KestelL, i Iieicester; England; assignors tmUnited -I Shoe Machinery, Emulation, Flemington, N; 1;, a oorpmtionofiNewJersey OriginaIQappIicati n, May 20,; 1939; Serial No.1 274,794; Divided-and this application May-12 j 1942 SMFlFNbr4426644n. ln Great Bi-itainqune -za;.ms: y

7 Y v 4.0mm. The present invention"'relatestolubricating systems; and is herein disclosed as embodied in a construction particularly; adapted for use in shoe sewing machines but also adapted for use-mother t s, f machines which comprise operating de vices and actuating connections forsaidf devices.

The objectof the invehtionkis-toprovide im-i prove'd means in a lubricating systemwhemby the lubricant used may be continuously filtered (sna s opening Mfformd in the topv or it which i'siin alignmentwith anop'enin-g 6J5 leading from the chamber 643110 the reservoir' $39 50 that oil in the latter-can; fl'ow intothe' sleeve member 8 H '1', The

sleeve member has in it: a cylindrical gauze filter 651 secured on the inner end of acylindfical stem 653' which is pressed into' areduced portion or the boreof the sleeve member 643 near the front thereof; -The stem 653 has a central bore-"exand whereby easy access may be hadto -the-filter 1o tending through it; the front end of-which-is for cleaningwithout interfering with tli'e supclosed. by a screw 655 threaded intoitand the plyof 'l'ubric'antin the machine'and-without dis stem has formed in it an opening 65l'which'leadsg turbing 'other; partsofithe 'apparatusr'. from the central bore'in thews't'e m upwardly v With the above objectsirr view," theainvena through abore 659 in'the sle'eve fmembersjd I; to a tion con-templates the provisionin a 'lubricating l5 boreina pump bracket lii'li securedin the resersystem of a chamber through which the='lubrir n w ich 'leadsto afp mp amber' t e cant passes from a source'ofsup'ply to-the'con pump bracket. The front efid'ofthe cylindrical nections to be" lubricated; means for removably chamber-643* in thereservoir BMsisclosedf'and supporting a filter in said cham'berand a 'shut the slee've memberl 6H is':he1d'in place by adorneofivalve whichis rendered p rativeby the re p dn663 s rewed nto the hambernd moval of the-filter to prevem tnencw'sr lubrienclosing the front. end. portion. of: the/sleeve cant into the chamber after the fllter -has been member which po is reduced in diameter removed; 1 an'd -is.bored axial-1y frcmits' front end intotthe Other featuresqof the invention contemplate bore into which theaforesaid'stem fifl is ipressedi the provision ofcertainnovel constructionsa and The opening liflwhichzleads fromtheireservoir arrangements=..of"partsthereinarieridescribediancl 39."- to the interior of the sleeve. memberiGMt is claimed. i i normallyopemf but lf thedoi'ne-shapedi cap/66:3 I The present applicationiisai'divisionofiappliris removed=and the sleeve member 541 and 'Wilihdt cation Serial No.. 2743794; for Shoe-sewing ma thafilten 551i are;drawn-'fnrwardlywoutof; the chines, ,filed May-2Q, .1939; and the lubricating cylindrioalechamber- 6.43. in the reservoint this I apparatus hereinafter specifically. described-ch openinaiilt-iscauseditcr be; uto i a y embodied in the machine disclosed in said apso. thatathe, oil. in the reservoir'w llinot"escape.* plicationf I 1 The openingiis closed bye-plug6fi5iwhichiis piv Referring-to the drawing accompanying, this otedconthe; forward end of; ahorizontal-armrifil application, the figure is a sectional side elevawhich is pivoted at'its rear end on a horizontal tion of an oilreservoir provided with a removp n 5 9 n the reservoir. The arm and p u 'a e able filter and a shut-oil? valve embodying the normally ld ina raised position by a vertical several features of the invention. plunger 6' which is slidingly mounted in the In the illustrated construction, oil for the lureservoir. The plunger fill engages at its upbrication of the actuating connections for the 40 per end the arm 6611and at its lower end the operating devices of the machine in which the sleeve member its hold the arm 66'! raised illustrated construction is used is supplied from and the plug 665 away from the opening649 so a reservoir indicated at 639. Below the reserthat the oil can flow from the reservoir into the voir is a cylindrical chamber 643 through which sleeve member 6M and be drawn through the g the oil passes on its way from the reservoir to the gauze filter 65! and passages in the stem 653 byJ actuating connections to be lubricated, and in the pump. If the sleeve member 6 is withthe chamber 643 is located an oil filter compri sdrawn from the cylindrical chamber, the plunger ing a sleeve member or plug 6. A pin 642 pro. 6' is moved down by' a'spring plunger 613 bejecting from the wall of the chamber 643 for en-' bind the end of the sleeve member 64! and the gagement ina slot 644 formed in the sleeve memplug 665 closes the opening 649 leading from the bar 6M, serves to key the member I against reservoir to the cylindrical chamber. The closrotational movement from a predetermined aning of the opening 649 occurs during the with-- gular position in the chamber. The inner end of .drawal of the sleeve member 64! before the rear the sleeve'member 641 is closed by a screw 645 in end of the latter passes in front of the opening the member. The sleeve member 6 has an 649 and the rear end of the sleevememberlmoves rearwardly of and closes the opening 645 before it engages the plunger 61] and raises it and the plug 665 as the sleeve member is replaced in the chamber. The opening 649 is thus effectively closed before the Withdrawal of the sleeve memher 6 and is opened after the rear end of the member has passed the opening 649 so that no oil can flow from the reservoir 639 into the cylindrical chamber 843 and from the chamber onto the floor. The aforesaid pump bracket 65! in the reservoir is positioned below the level of the oil in the reservoir and has rotatably mounted in the aforesaid pump chamber a pair of spur gears, as is usual in this type of pump, one of which gears is secured on the lowerend of a driven vertical shaft 615 rotatably mounted in the bracket. The other gear is secured on a vertical shaft rohaving a filter attached thereto, a connection through said plug to the pump, a shut-off valve connection between the reservoir and the chamber, spring means tending to close the valve, a valve lifting lever arranged to be' supported by the plug in operating position to maintain the valve in open position, and arranged upon removal of the plug to permit the closing of the valve.

tatably mounted in the pump bracket and is,

driven by the first gear, the gears acting to force the oil from the reservoir along a horizontal passage in the pump bracket. The pump bracket 66! has in it four vertical holes leading from the top of the bracket into the aforesaid passage in the bracket. Pipes designated respectively at 614, 686, E88 and 690 lead up through the column of the machine from each of the four holes in the pump bracket and the pipes convey oil pumped through them to various parts of the machine.

The nature and scope of the invention having been indicated, and an embodiment of the invention having been specifically described, what is claimed is: i

1. In a lubricating system for machines comprising operating devices and actuating connections therefor, the combination of a reservoir, conduits for distributing lubricant to'said actuating connections, a lubricant pump, and a supply connection between the reservoir and the pump including a chamber, a filter removably supported in said chamber, a shut-off valve between the reservoir and chamber, spring means tending to close the valve, and a valve lifting. lever arranged to be supported by the filter in operating position to maintain the valve in open position against the pressure of said spring.

2. In a lubricating system for machines comprising operating devices and actuating connections therefor, the combination of a reservoir, conduits for distributing lubricant to said actuating connections, a pump for forcing lubricant from the reservoir through said conduits, and a filter connection between the reservoir and the pump including a chamber beneath the reservoir, a plug removably supported in the chamber and 3. In a lubricating system for machines comprising operating devices and actuating connections therefor, the combination of a reservoir, conduits for distributing lubricant to said actuating connections, a pump for forcing lubricant from said reservoir through said conduits, and a filter connection between the reservoir and pump including a chamber beneath the reservoir, a plug fitted within the chamber having a hollowed portion therein, a stem and a filter connected thereto supported within the hollowed portion, circulatory connections from the reservoir and pump through the plug to the hollowed portion and to said stem for passing lubricant through the filter, a shut-off valve connection between the reservoir and the chamber, spring means tending to close the valve, and a valve lifting lever arranged to besupported by the plug in operating position to maintain the valve in open position, and arranged upon removal of the plug to permit the closing of the valve.

4. In a lubricating system for machines comprising operating devices and actuating connections therefor, the combination of a reservoir, conduits for distributing lubricant to said actuating connections, a pump for forcing lubricant from said reservoir through said conduits, and a filter connection between the reservoir and pump including a horizontally disposed cylindrical chamber beneath the reservoir, a cylindrical plug fitted within the chamber having an axial bore therein andcapping means for the bore, a hollow stem and a filter connected thereto supported within the bore, circulatory connections from the reservoir and pump downwardly through the plug to the bore and to said stem for passing lubricant through the filter, a key for registering the plug angularly in the chamber, a cap for closing the chamber, a shut-01f valve connecting the reservoir with the chamber, and means rendered operative by the removal of the plug for closing said valve.

JOSEPH GOULDBOURN. THOMAS AUBREY KESTELL. 

